(If you're not already signed-in) use the sign-in link at the top right-hand corner to sign-in with your Google account. (Until you're signed in, you can't see the star icon used to add your vote).

Against the title "Issue 1730: Add Esperanto Characters" or the "add a comment" section's "Vote for this issue...", click on the white star to turn it yellow.

You may also leave a comment if you wish, but please note that just leaving a comment does not count as voting for the issue. Unless the "Vote for this issue" star is yellow you're not recorded as supporting the proposal.

Even if your current mobile phone isn't based on Android software, do still please consider voting. If the proposal is adopted, and future Android phones support Esperanto, then this might influence the choice of your next mobile phone!